JP2014223993A - Installation material of working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an installation material of a working vehicle which can drive a hydraulic pump selectively with an engine and an electric motor and, further, can select a power source automatically and precisely according to actual operation inputting circumstances to an operation switch on the basis of power source selection information set correspondingly to operation inputting modes to the operation switch.SOLUTION: Control devices UK includes: a storage unit C1 which stores power source selection information preset respectively correspondingly to a plurality of operation inputting modes to operation switches CR-SW1 to 4 and CF-SW1 to 3; a power source selection unit C2 which selects a power source on the basis of power source selection information stored by the storage unit C1 and the operation inputting modes to the operation switches; and a switch control unit C3 which switches and controls a power source switching device X capable of selectively switching a power source of a working machine into either of an engine E or an electric motor M such that the power source selected by the power source selection unit C2 becomes the power source of the working machines 2, 7 and 50.

Description

  The present invention includes a work implement that can be operated using an electric motor as a power source, and a work that can be performed using the work implement. It relates to vehicle bodywork.

  Conventionally, the above-mentioned bodywork, for example, a dust collection work bodywork mounted on the body of a refuse collection vehicle, uses an electric motor exclusively as a power source for the work machine.

Japanese Utility Model Publication No. 55-51625

  The conventional work vehicle bodywork as described above has been improved so that either the engine or the electric motor can be selected and used as a power source for the work machine. It is conceivable to select an electric motor at night, in a residential area, etc., and to select an engine in a situation where noise exhaust of the engine is not a problem.

  In this case, a power changeover switch for arbitrarily switching the power source of the work machine is required. However, in order to accurately operate the work machine with an appropriate power source, a switch to the work switch for starting the work machine is required. Prior to the operation input, it is desirable to select and operate the power source by operating the power selector switch, and this series of switch operations becomes complicated.

  In addition, when the operation switch is input with forgetting the operation input to the power changeover switch, there is a possibility that the work machine is operated with an inappropriate power source.

  The present invention has been made in view of such circumstances, and it is possible to select and use either an engine or an electric motor as a power source of a work machine, and solve the above-described technical problem in that case with a simple structure. The object is to provide a work vehicle bodywork.

  In order to achieve the above object, an invention according to claim 1 is a bodywork mounted on a vehicle body of a work vehicle, and a work machine capable of operating using either an engine or an electric motor as a power source, A work switch for arbitrarily selecting and operating one of a plurality of work modes by the work machine, and a control device for controlling the work machine in a work mode corresponding to an operation input mode to the work switch; The control device stores a power source selection information set in advance corresponding to each of a plurality of operation input modes to the work switch, power source selection information stored in the storage unit, and the work switch. A power source selection unit that selects a power source based on the operation input mode, and the power source selected by the power source selection unit is a power source of the work machine so that the power source of the work machine is an engine and Electric motor Characterized in that it comprises a switching control unit for selectively switching control switchable power source switching apparatus to one of.

  According to a second aspect of the invention, in addition to the feature of the first aspect of the invention, the control device includes a power source for arbitrarily switching a power source of the work implement to either an engine or an electric motor. A selection switch, an automatic switching mode in which the power source of the work implement is automatically switched by effectively operating the storage unit, the power source selection unit, and the switching control unit, and an operation input to the power source selection switch A mode change switch for selecting and operating an arbitrary switching mode for arbitrarily switching the power source of the work machine is connected.

  According to a third aspect of the present invention, in addition to the feature of the first or second aspect of the present invention, the power source selection information is arbitrarily set, and an arbitrary setting means for storing the power source selection information in the storage unit is provided.

  According to a fourth aspect of the present invention, in addition to the above feature of any of the first to third aspects, the control device can arbitrarily switch the power source of the work implement to either an engine or an electric motor. And a warning means for prompting an operator to perform a switching operation of the power source selection switch. The power source selection information stored in the storage unit includes an operation position of the power source selection switch. And the first power source selection information for causing the power source selection unit to select a specific power source corresponding to the operation input mode to the work switch, and the operation to the work switch by operating the power source selection switch. Second power source selection information that prompts the user to select a specific power source corresponding to the operation input mode, and the control device receives the second power source selection information in the power source selection unit. The working switch If the specific power source corresponding to the operation input mode to the switch is selected by the power source selection switch, and if not selected, the warning means is operated for a predetermined time, respectively. The power source selection unit is made to select a power source based on an operation position of the power source selection switch.

  As described above, according to the present invention, in the bodywork of the work vehicle, any power of the engine and the electric motor can be selected and used as the power source of the work machine. Therefore, the power source of the work machine is appropriately selected according to the work situation. It is convenient to use properly.

  In particular, a storage unit that stores preset power source selection information corresponding to each of a plurality of operation input modes to the work switch, a power source selection information stored in the storage unit, and an operation input mode to the work switch. Since a power source selection unit that selects a power source based on the power source and a switching control unit that switches and controls the power source switching device so that the power source selected by the power source selection unit becomes a power source of the work machine, Based on the power source selection information set in advance corresponding to the operation input mode to the work switch, the work machine is operated by automatically and accurately selecting the power source according to the actual operation input status to the work switch. As a result, the switch operation is simplified as a whole, the work efficiency can be improved, and the situation where the work implement is operated with an improperly selected power source can be effectively improved. It can become.

  In particular, according to the invention of claim 2, an automatic switching mode for automatically switching the power source of the work machine and an arbitrary switching mode for arbitrarily switching the power source of the work machine based on an operation input to the power source selection switch. Since the mode change switch for selecting and operating at any time is provided, when the automatic switching mode is selected, the power source selection control according to the operation input mode to the work switch can be automatically performed as described above. On the other hand, when the arbitrary switching mode is selected, it becomes possible to arbitrarily select the power source based on the operation input to the power source selection switch, and it is convenient to use both modes according to the work environment.

  Further, according to the invention of claim 3, since the power source selection information is arbitrarily set and stored in the storage unit, the power source selection information is not fixed and is arbitrarily changed as needed. Can be more convenient.

  In particular, according to the invention of claim 4, the power source selection information stored in the storage unit ignores the operation position of the power source selection switch and powers a specific power source corresponding to the operation input mode to the work switch. First power source selection information to be selected by the source selection unit, second power source selection information for urging to select a specific power source corresponding to the operation input mode to the work switch by operating the power source selection switch; When the second power source selection information is input to the power source selection unit, the control device selects the specific power source corresponding to the operation input mode to the work switch with the power source selection switch. In this case, immediately or if the warning means is not selected, the power source selection unit selects the power source based on the operation position of the power source selection switch after operating the warning means for a predetermined time. Entered in When the source selection information is the second power source selection information and the specific power source corresponding to the operation input mode of the work switch is not selected by the power source selection switch, the power source is notified by the warning to the operator. By prompting the operator to switch the selection switch, it is possible to select a power source that is more suitable for the work operation mode, and the power source is switched in spite of such warning to the worker. Even in the case where the power source is not selected, the intention of the operator can be more respected by selecting the power source based on the actual operation position of the power source selection switch.

The whole side view which fractured | ruptured one part which shows one Embodiment of the refuse collection vehicle carrying the bodywork concerning this invention Rear view of the garbage truck (viewed in the direction of arrow 2 in FIG. 1) Schematic explanatory diagram showing an example of a power transmission system of the garbage truck Control block diagram of the garbage truck Schematic explanatory diagram of a hydraulic circuit for operating each cylinder of the garbage truck Front view showing an example of an operation panel provided in the cab of the garbage truck (enlarged view of arrow 3 in FIG. 1) Front view showing an example of an operation panel provided on the side of the dust input box of the garbage truck (enlarged view of the portion indicated by arrow 7 in FIG. 2) A side view showing an example of a container reversal drive device installed in the garbage truck as necessary Flow chart showing an example of a basic control procedure for power source switching control Subroutine showing control example of power source selection processing (corresponding to step S11 in FIG. 9) Correspondence diagram of operation input mode and power source selection information showing setting example of power source selection information corresponding to operation input mode of work switch

  Embodiments of the present invention will be specifically described below based on the embodiments of the present invention illustrated in the accompanying drawings.

  1 and 2 show a garbage collection vehicle V as a work vehicle, which is used for collecting a base vehicle Vb and a dust collection work mounted on the vehicle body F after the assembly of the base vehicle Vb is completed. It is composed of the bodywork K. The base vehicle Vb is provided with a vehicle-side control device UV, and the bodywork K is provided with a bodywork-side control device UK.

  Referring also to FIGS. 3 and 4, the vehicle body F of the base vehicle Vb is connected to an engine E capable of applying a driving force to the wheels W, a battery B, and the battery B via an inverter 12. An electric motor M that operates with electric power from the battery B, and a power selection / extraction mechanism that can selectively extract the power of the engine E or the electric motor M from the engine E and a wheel drive system D as a drive system including the electric motor M. At least the PS and the vehicle-side control device UV that has a microcomputer as a main part and can control the engine E, the electric motor M, and the power selection / extraction mechanism PS are mounted.

  The wheel drive system D is configured such that wheels, that is, rear wheels W are linked and connected to the output side of the engine E via the transmission 10, and the input side of the transmission 10 and the output side of the engine E are connected to each other. An electromagnetic clutch 11 is connected between the clutch 11 and the transmission 10. A motor shaft (not shown) of the electric motor M is interposed in series between the clutch 11 and the transmission 10.

  If the electric motor M is de-energized with the electromagnetic clutch 11 connected and the motor shaft is idled by the vehicle-side control device UV, the output of the engine E is output from the electromagnetic clutch 11, the motor shaft and the transmission 10. Thus, the wheel W can be driven by the engine E because it is transmitted to the wheel W side. On the other hand, if the electric motor M is energized from the battery B while the electromagnetic clutch 11 is disconnected, the output of the electric motor M is transmitted to the wheel W side through the transmission 10, so that the wheel W travels with the electric motor M. Can be driven. As described above, the refuse collection vehicle V is a hybrid work vehicle capable of driving and driving the wheels W using either the engine E or the electric motor M as a power source.

  Further, since the electric motor M can generate an electromotive force with the idling of the motor shaft when the wheels W are driven to run by the engine E, the battery B can be charged with this. The electric motor M may also be used as a generator as described above, or a charging-dedicated generator driven by the engine E may be provided separately from the electric motor M, and the electric power generated by the generator Thus, the battery B may be charged.

  The engine E, the electric motor M, the battery B, the electromagnetic clutch 11 and the inverter 12 are connected to the vehicle-side control device UV, and a starter switch S-SW for starting the engine E is also connected to the vehicle-side control device UV. The

  In addition, the battery B shown in the block diagram of FIG. 4 includes a battery sensor including a voltmeter and an ammeter for detecting the state of the battery B, and vehicle-side control of power supply and charging between the battery B and the electric motor M. A charging / charging circuit unit that is controlled based on a control signal from the device UV is included. These sensors and the charging / charging circuit unit are connected to the vehicle-side control device UV, and in particular, a battery sensor that detects the remaining battery level is It is also connected to the bodywork side control device UK (second control device UK2 described later).

  Further, the engine E shown in the block diagram of FIG. 4 includes a sensor for detecting the state of each part of the engine, an onboard battery and an electric load part of the engine (for example, a spark plug, a starter motor, a generator, etc.) The charging / charging circuit unit for controlling the power supply / charging between the vehicle side control unit UV based on the control signal from the vehicle side control unit UV is included, and the engine side sensor and the charging / charging circuit unit are connected to the vehicle side control unit UV. Is done. Of the sensors provided in the engine E, in particular, a sensor that detects that the engine is in operation and outputs an engine operating signal is also connected to the bodywork side controller UK (second controller UK2). The

  Thus, each of the vehicle-side control device UV, the engine E, the electric motor M, and the battery B is actually connected by a plurality of power lines and / or signal lines, but the display is shown in FIG. Simplified.

  The transmission 10 is provided with a power take-out device PTO capable of taking out the output of the transmission at any time, and the output side of the power take-out device PTO is a part of the bodywork K, which will be described later. Linked to and linked to P. The power take-out device PTO is connected to the vehicle-side control device UV, and the output of the transmission 10 is changed to a wheel according to an operation input to the power take-off switch P-SW that is also connected to the vehicle-side control device UV. Transmission can be selectively switched between the W side and the hydraulic pump P side. That is, when the power take-off switch P-SW is off, the output of the transmission 10 is transmitted to the wheel W side and used for driving, but when the switch P-SW is turned on, the transmission The output of 10 is transmitted to the hydraulic pump P side and used for driving the pump. In addition, since the structure function of such a power take-out device PTO is conventionally known, further explanation is omitted.

  Thus, the electromagnetic clutch 11, the power take-out device PTO, and the power take-off switch P-SW constitute the power selective take-out mechanism PS in cooperation with each other.

  In the illustrated wheel drive system D, the engine E and the electric motor M are arranged in series with each other. However, in the present invention, the electric motor M and the engine E are respectively connected in parallel with each other via an electromagnetic clutch. The wheel W may be driven to drive or the hydraulic pump P may be driven using either the engine E or the electric motor M as a power source.

  By the way, the bodywork K has a box-shaped dust container 1 with the rear end opened as a base body, that is, a body body, and this dust container 1 is mounted on the vehicle body F of the base vehicle Vb as a retrofit. Fixed. At the rear end of the dust storage box 1, a dust input box 3 having a dust input port 3a for inputting dust into the dust storage box 1 is provided at the rear end, and the dust input port 3a is connected to the open / close door 3t. It can be opened and closed. The upper end portion of the dust box 3 is pivotally supported on the upper rear end of the dust container 1 so that the dust box 3 can be rotated up and down by the first cylinder A1 for rotating the dust box. By moving it, the dust input box 3 opens the rear end opening 1a of the dust storage box 1 as shown by the solid line in FIG. 1, and opens the rear end opening 1a as shown by the chain line in FIG. It is possible to move at any time between the discharging position (raising position).

  A work machine capable of executing a loading step of forcibly loading the input dust in the input box 3 into the dust storage box 1 when the input box 3 is in the loading position. A dust loading device 2 is provided. The structure of the dust loading device 2 is a conventionally well-known structure called a compression plate type. In the illustrated example, the dust loading device 2 is supported on the left and right side walls of the dust container box 3 so as to be movable up and down at a position facing the rear end opening 1a of the dust container box 1. A lifting / lowering body 4, a second lifting / lowering cylinder A 2 for forcibly raising / lowering the lifting / lowering body 4, and a shaft that extends to the full width of the dust-filling box 3 and is pivotable to the lower part of the lifting / lowering body 4. A compression plate 5 to be supported and a third cylinder A3 for advancing and retreating the compression plate for forcibly turning the compression plate 5 are provided.

  Thus, the primary compression action performed by lowering the elevating body 4 from the raised position to the lowered position with the compression plate 5 held at the rear position, and the compression plate 5 performed with the elevating body 4 held at the lowered position. Secondary compression action performed by forward rotation from the rear position to the front position, and loading action performed by raising the elevating body 4 from the lowered position to the raised position with the compression plate 5 held at the forward position. By executing a series of dust loading cycles consisting of the following, the throwing dust in the dust throwing box 3 is forcibly pushed into the dust containing box 1. And in order to operate each said operation | movement sequentially, the several proximity switch which each detects the raising position of the raising / lowering body 4 and the falling position, and the back position and the front position of the compression board 5 in the appropriate place in the dust throwing-in box 3 is carried out. (Not shown) are provided, and these proximity switches are connected to a first control unit UK1 described later.

  In addition, the dust container 1 is provided with a dust discharge device 7 as a working machine for discharging dust stored in the box to the outside. The dust discharge device 7 includes a discharge plate 6 that extends to the full width in the dust storage box 1 and can be moved back and forth with respect to the dust input box 3 at the loading position, a back surface of the discharge plate 6, and a dust storage box. The first cylinder A1 is interposed between the first cylinder A1 and the fourth cylinder A4, which is interposed between the front part of the first cylinder A1 and drives the discharge plate 6 forward and backward with respect to the dust box 3. Then, when the dust input box 3 is in the discharge position (raised position), the discharge plate 6 is retracted in the dust storage box 1 to force the storage dust in the dust storage box 1 from the rear end opening 1a. It can be discharged.

  Referring also to FIG. 6, a front operation panel CF is provided in the cab of the base vehicle Vb, and the operation modes of the dust loading device 2 and the dust discharge device 7 are arbitrarily set in the front operation panel CF. Various work switches CF-SW1 to 3 for selecting and operating, and second power for arbitrarily switching between an engine driving state in which the hydraulic pump P is driven by the engine E and a motor driving state in which the electric motor M is driven. A source selection switch M-SW2, an automatic switching mode for automatically controlling switching between the engine driving state and the motor driving state of the hydraulic pump P (that is, switching of the power source) and an arbitrary switching mode performed manually are selectively performed. A mode change switch SWC for switching operation and various notification lamps L1 to L6 are provided. The second power source selection switch M-SW2 outputs a motor selection signal only when it is turned on to select a motor drive state.

  The various operation switches of the front operation panel CF include, for example, a main switch CF-SW1 for operation selection operation, an up / down selection switch CF-SW2 that rotates the dust input box 3 up and down, and a discharge plate 6. -An advance / retreat selection switch CF-SW3 for reverse operation and other work switches (not shown) are included. The main switch CF-SW1 includes a loading selection position that permits the loading operation of the dust loading device 2, a discharge selection position that permits the discharging operation of the dust discharging device 7, and the dust loading device 2 and the dust discharging device. It is possible to arbitrarily select and operate the off position at which each operation of 7 is stopped, and it may be configured so that each of the three positions can be selected and held, or automatically from the loading selection position or the discharge selection position to the off position. You may comprise so that it can return. Thus, the main switches CF-SW 1 to 3, the up / down selection switch CF-SW 2, and the advance / retreat selection switch CF-SW 3 also function as work end switches for the dust discharge process.

  Referring also to FIG. 7, the rear operation panel CR is fixed and supported on the outer surface of the dust input box 3 around the dust input port 3a. The rear operation panel CR includes various work switches CR-SW1 to 5 for arbitrarily selecting and operating the operation mode of the dust loading device 2, an engine driving state in which the hydraulic pump P is driven by the engine E, and the electric motor M. The first power source selection switch M-SW1 for switching operation between the motor driving state driven by the motor and the switching between the engine driving state and the motor driving state of the hydraulic pump P (that is, switching of the power source) is automatically controlled. A mode change switch SWC for selectively switching between an automatic switching mode and an arbitrary switching mode that is manually performed, and various notification lamps L1 to L6 are provided. The power source selection switch M-SW1 outputs a motor selection signal only when it is turned on to select a motor drive state. In the illustrated example, the rear operation panel CR is disposed on the left side of the dust input port 3a of the dust input box 3, but in addition (or alternatively), the rear operation panel CR is provided on the right side of the dust input port 3. It may be arranged.

  The various operation switches of the rear operation panel CR include, for example, a loading switch CR-SW1 that outputs a command signal for starting the loading operation to the refuse loading device 2, and the loading cycle of the dust loading device 2. A single switch CR-SW2 that selects whether to operate only once or continuously, and an emergency stop switch that outputs a command signal for emergency stop of loading operation of the dust loading device 2 and discharging operation of the dust discharging device 7 CR-SW 5 and work switches CR-SW 3 and 4 for auxiliary work are included.

  Thus, when the single unit switch CR-SW2 is switched to the single operation position while the continuous unit switch CR-SW2 is held in the continuous operation position and the loading cycle is continuously operated, the dust loading device 2 Since the loading operation ends at the same time as the end of the loading cycle being executed, the unit switch CR-SW2 also serves as a work end switch during continuous operation.

  As the auxiliary work switch, in the illustrated example, the container reversing switch CR-SW3 for reversing the mini container Ct around the dust inlet 3a and the opening / closing door 3t of the dust inlet 3a are opened and closed. Open / close switch CR-SW4 is provided. Among them, the reversing drive device 50 for the mini container Ct is conventionally known as disclosed in, for example, Japanese Patent No. 3095673, and is disposed around the dust inlet 3a. The dust in the mini-container Ct can be automatically put into the dust box 3 from the dust slot 3a by being reversely driven by the driving force of the fifth cylinder A5.

  FIG. 8 shows a schematic view of an example of the reversing drive device 50 installed at the rear end of the dust box 3, and the mini container Ct detachably connected to the device 50 is the fifth cylinder A 5. It is lifted upward by an extension operation and rotated so as to be reversed, so that the dust in the container Ct can be automatically thrown into the dust box 3. In addition, such a container reverse drive device 50 is installed in the garbage throwing box 3 as needed, and can be omitted depending on the purpose and usage of the garbage truck.

  The open / close door 3t of the dust input port 3a is attached to the dust input box 3 so as to be slidable between an open position and a closed position. Between the open / close door 3t and the dust input box 3, an open / close cylinder is provided. A door opening / closing device (not shown) that operates by the driving force of the sixth cylinder A6 is interposed.

  Further, the various notification lamp groups on the front and rear operation panels CF and CR are in a state in which the hydraulic pump P can be normally driven by the electric motor M while a vehicle key switch (not shown) is turned on. A first notification lamp L1 as a first notification means for notifying that it is, a second notification lamp L2 as a second notification means for notifying that the remaining amount of the battery B has dropped below a predetermined value, and hydraulic pressure A third notification lamp L3 as third notification means for notifying that the pump P is being driven by the electric motor M (that is, the motor is being driven), and the remaining amount of the battery B sufficiently exceeds a predetermined value. The fourth notification lamp L4 as a fourth notification means for notifying that there is a fifth notification means as a fifth notification means for notifying that the power source selection switch M-SW1, 2 is in the operation position for selecting the motor drive state. 5 Notification lamp L5 And a sixth notification lamp L6 for warning that prompts the switching operation of the power source selection switches M-SW1 and M2, and the notification contents of the notification lamps L1 to L6 are included in the front and rear operation panels CF and CR. Is attached to each.

  Thus, the sixth notification lamp L6 constitutes a warning means of the present invention, which effectively warns the operator and strongly urges the switching operation of the power source selection switches M-SW1 and M2. Blinks when lit.

  The “state in which the electric motor M can be normally driven” notified by the first notification lamp L1 means that the remaining amount of the battery B (that is, the amount of electricity charged) is sufficient, that is, not less than a predetermined lower limit value. The electric system including the electric motor M and the battery B (hereinafter simply referred to as “electric system” in this specification) for ensuring the electric motor M to operate with the electric power from the battery B is not broken. A state (that is, a state in which the electric system functions normally without a failure such as disconnection, short circuit, or element breakage).

  Thus, after switching the main switch CF-SW1 of the front operation panel CF to the loading selection position and turning on the loading switch CR-SW1 of the rear operation panel CR, the loading of the dust loading device 2 is performed. Can be started, and if the main switch CF-SW1 is switched to the discharge selection position and the up / down selection switch CF-SW2 is operated to the raised position, the dust box 3 is rotated upward, and then If the advance / retreat selection switch CF-SW3 is operated to the discharge position, the discharge plate 6 can be moved backward to discharge the stored dust in the dust storage box 1.

  The notification lamps L1 to L6 described above are appropriately color-coded for each notification function in order to make it easier to visually identify the notification function, or change the flashing mode of at least some of the notification lamps (for example, the flashing interval). May be changed). Further, as the first to sixth notification means, instead of (or in addition to) the first to sixth notification lamps L1 to L6 in the illustrated example, sound generation means for generating a predetermined notification sound or announcement sound may be used. Is possible. In this specification, the notification lamps L1 to L6 are used in a broad concept including not only a light bulb and a pilot lamp but also an LED (light emitting diode) and a liquid crystal with a backlight.

  By the way, the front operation panel CF is installed in the cab, but the operation terminal MS is further arranged as a third operation panel at a location outside the cab and away from the dust box 3. Although not shown in the figure, this operation terminal MS includes switches such as various switches CF-SW1 to 3, CF-SW1 to 4, M-SW1, and the like provided on the front operation panel CF and / or the rear operation panel CR. Is attached. Further, the operation terminal MS is provided with a display MD as a display means, at least one equipment such as a keyboard, a mouse, and a touch panel as an operation input device, and at least one equipment such as a camera and a scanner as an information input device. Is done.

  And, for example, when the operation terminal MS is installed and fixed at a suitable position on the side surface of the refuse storage box 1, the operation terminal MS becomes relatively close to the loading switch CR-SW1 and the like of the rear operation panel CR, and the wiring is collected. There is an advantage which becomes easy. Further, if the operation terminal MS is installed and fixed in the front part of the refuse storage box 1, for example, in the vicinity of a control unit box UKB described later, there is an advantage that it becomes relatively close to the bodywork side control unit UK and wiring can be easily collected.

  The operation terminal MS constitutes an arbitrary setting means of the present invention, and may be substituted by at least one of a tablet PC, other personal computer, mobile phone, handy terminal, etc. Or, to be used as a wireless remote controller, an operator can attach and detachably attach and detach using a magnetic force of a magnet or the like to an arbitrary position of a vehicle (for example, the outer surface of the dust container 1) or a fixed object outside the dust container 3 Or it may be carried or carried by a worker. In that case, the operation terminal MS and the second control device UK of the bodywork side control device UK may be detachably connected by external wiring, or may be connected wirelessly.

  Further, in the garbage storage box 1, various hydraulically operated working machines mounted on the vehicle, that is, the dust loading device 2, the dust discharging device 7, the container reversing device 50, and the dust opening door opening / closing device (hereinafter simply referred to as a working machine). The hydraulic circuit C including the hydraulic pump P is mounted. As shown in FIG. 5, the hydraulic circuit C includes a hydraulic pump P whose suction side is connected to an oil tank T, and a discharge side of the hydraulic pump P as a hydraulic oil chamber of the first to sixth cylinders A1 to A6. The first to sixth valves v1 to v6 respectively interposed in the oil passages connected in parallel and the discharge side of the hydraulic pump P and the oil tank T to suppress the discharge pressure of the hydraulic pump P to a predetermined value or less. And a relief valve R.

  The first to sixth valves v1 to v6 are operated between the hydraulic oil chambers of the cylinders A1 to A6 and the hydraulic pump P so as to switch and control the operations of the corresponding cylinders A1 to A6 independently. It is configured to perform oil supply / discharge control. When each of the valves v1 to v6 is switched to the neutral position, at the same time, the valves v1 to v6 and the corresponding hydraulic oil chambers of the cylinders A1 to A6 are shut off, and the cylinders A1 to A6 are hydraulically locked. As a result, the corresponding work machine is stopped and locked at the current work position. In the illustrated example, the first to sixth valves v1 to v6 are centrally arranged as a multi-valve MV in a single base and unitized, and the multi-valve MV constitutes a valve device.

  The hydraulic pump P is composed of a variable displacement displacement type hydraulic pump, and in this embodiment, in particular, a plurality of plungers that are annularly arranged in a pump casing (not shown) and are slidably fitted, and end portions of the plungers It is composed of a swash plate plunger pump that has a swash plate that is in sliding contact with the pump casing and that can rotate relative to the pump casing. By changing the inclination angle of the swash plate, the operation stroke of each plunger, and hence the pump discharge capacity is changed. It is possible. An electric actuator A that drives the swash plate is linked to and connected to the swash plate to change the inclination angle. Since the structure of such a swash plate type plunger pump is conventionally well-known, further description is abbreviate | omitted. If such a swash plate type plunger pump is used as the hydraulic pump P, there is an advantage that the discharge capacity can be easily changed and the switching control can be performed quickly and accurately. The actuator A can be appropriately selected from an electromagnetic actuator, an electric motor or the like, and an electromagnetic actuator is used in this embodiment.

  By the way, the bodywork K is provided with a bodywork-side control device UK that is independent from the vehicle-side control device UV, and this is a control unit attached to an appropriate place (the front end portion in the illustrated example) of the dust container box 1. Built in box UKB. This body control unit UK is a multi-valve for controlling the operation of the work machine according to operation inputs to the various work switches CF-SW1 to 3 and CR-SW1 to 5 of the front and rear operation panels CF and CR. A first control unit UK1 having a microcomputer as a main part and capable of outputting a valve control signal to the MV, and intervening between the first control unit UK1 and the vehicle-side control unit UV to exchange signals, that is, an interface function It is comprised from the 2nd control apparatus UK2 which can exhibit. The vehicle-side control device UV and the bodywork control device UK are both activated by turning on the vehicle-mounted power supply when the vehicle key switch is turned on, and the key switch is turned off. In response to this, it becomes de-energized and stops operating.

  The first control unit UK1 is basically a control device having the same structure as the control device for work equipment that is conventionally mounted and used in the dust collecting vehicle V so as to control the operation of the dust loading device 2 and the dust discharge device 7. To this, various work switches CF-SW1 to 3 and CR-SW1 to 5 provided on the front and rear operation panels CF and CR are connected so as to receive the operation input signals. The first control unit UK1 is connected to a multi-valve MV (each valve v1 to v6) that controls the operation of various cylinders A1 to A6 that operate the work implement, and individually outputs an operation command signal to the valves v1 to v6. Is possible.

  Further, the first control unit UK1 can output an idle up signal for idling up the engine E to the second control unit UK2 when it is determined from the operation input status of the various work switches that the work implement is operating. In response to the input of this idle up signal, the second control unit UK2 can output a work implement operating signal indicating that the work implement is operating to the motor control unit of the vehicle side control unit UV. An electronic governor signal is output to the engine control unit of the side control device UV so that the engine speed can be increased (idle up).

  On the other hand, the first and second power source selection switches M-SW1, 2 are connected to the second control unit UK2 so as to receive the operation input signals, and the first to sixth notification lamps L1-6 are provided. It is connected so that the notification (lighting) operation can be performed by the output current from the second control unit UK2.

  In addition, the second control unit UK2 sends a motor drive command signal to the motor control unit of the vehicle-side control unit UV in response to the power source selection switches M-SW1 and M2 being turned on to output a motor selection signal. Based on the motor drive command signal and the work implement operating signal, energization from the battery B to the electric motor M (accordingly, motor operation) can be executed.

  That is, when the vehicle-side control device UV receives a motor drive command signal from the second control device UK2, the vehicle-side control device UV controls the engine E, the electric motor M, and the power selection / removal mechanism PS so that the power source of the hydraulic pump P is the electric motor M. When the motor drive command signal is not received from the second control unit UK2 (that is, when the engine start command signal is received), the engine E, the electric motor M, and the power are used so that the power source of the hydraulic pump P is the engine E. The selective extraction mechanism PS can be controlled.

  Thus, the second control unit UK2 controls the hydraulic pump P with the engine E in response to an operation input to the first and second power source selection switches M-SW1, 2 and in cooperation with the vehicle-side control unit UV. The engine drive state to be driven and the motor drive state to be driven by the electric motor M can be switched. The electromagnetic clutch 11 directly involved in switching the power source and the second control unit UK2 and the vehicle side control unit UV for controlling the operation of the electric motor M and the engine E in connection with the clutch switching. The power source switching device X of the present invention is configured in cooperation with each other.

  The second control unit UK has a plurality of preset operation inputs corresponding to a plurality of operation input modes to the work switches CR-SW1 to 4 and CF-SW1 to 3 (that is, a work mode of each work machine). A power source is selected based on a storage unit C1 for storing power source selection information, a plurality of power source selection information stored in the storage unit C1, and operation inputs to the work switches CR-SW1 to 4, and CF-SWs 1 to 3. A power source selection unit C2 for switching, and a switching control unit C3 for switching and controlling the power source switching device X so as to operate the work implement with the power source selected by the power source selection unit C2.

  Thus, in the storage unit C1, for example, the working machine in the upper table of FIG. 11, that is, the dust loading device 2, the dust discharge device 7, and the auxiliary device (that is, the container reversing drive device 50 and the opening door opening / closing drive device) A power source selection pattern previously associated with each of the plurality of work modes (that is, operation input mode of the work switch) is stored as a plurality of power source selection information. In this case, as the auxiliary device, an auxiliary work device that is operated by a hydraulic actuator other than the container reversal driving device 50 and the opening / closing door opening / closing drive device of the present embodiment may be used. In addition, in the setting example in the upper table of FIG. 11, selection (electric priority) is set for the dust loading device 2 that is frequently operated in a residential area and is often preferable to be electrically operated. Engine driving is set for the dust discharge device 7 which is frequently operated and hardly causes a problem even when the engine is driven. Electricity is set for the auxiliary device such as the container reversal driving device 50 having a relatively small work load.

  Further, in the lower table of FIG. 11, setting examples in which a plurality of work modes (operation switch operation input modes) of the work machine are classified more specifically are shown, and each work mode is classified. The attached power source selection pattern is stored as more power source selection information. In this case, for the work switch CF-SW2 that raises and lowers the dust input box 3 of the dust discharge device 7, for example, the setting of the power source to be selected is changed according to the operation position. The engine drive is set for the rising of the high dust input box 3, and the selection (engine priority) is set for the lowering of the load. Further, regarding the work switch CF-SW3 for moving the discharge plate 6 forward and backward, the setting of the power source to be selected is changed according to the operation position. For example, the engine drive is used for the forward movement of the discharge plate 6 with a high load. Further, selection (engine priority) is set for each of the reverse loads with a relatively low load.

  The plurality of power source selection information stored in the storage unit C1 is ignored by ignoring the operation positions of the power source selection switches M-SW1 and M2-SW1, as exemplified by the dotted frame in FIG. 4, the first power source selection information for causing the power source selection unit C2 to select a specific power source corresponding to the operation input to the CF-SWs 1 to 3, and the operation of the power source selection switch M-SW1, 2. It is classified into second power source selection information that prompts the user to select a specific power source corresponding to the operation input to the switches CR-SW1 to 4 and CF-SW1 to 3.

  The operation terminal MS functions as an arbitrary setting means for arbitrarily setting each of the plurality of power source selection information and storing the information in the storage unit C1 by appropriately operating an operation input device such as a keyboard. Thus, the power source selection information can be arbitrarily changed at any time without fixing the power source selection information in the storage unit C1, which is convenient.

  Thus, when the second power source selection information is input to the power source selection unit C2, the second control device UK2 of the bodywork side control device UK operates the work switches CR-SW1 to 4, CF-SW1 to If the specific power source corresponding to the operation input to 3 is selected by the power source selection switches M-SW1 and M2, the sixth notification lamp L6 as a warning means is displayed immediately. After the blinking operation for a predetermined time, the power source selection unit C2 selects the power source based on the operation position of the power source selection switches M-SW1 and M2, respectively, and a specific processing example will be described later.

  Furthermore, the second control unit UK2 can input the output signal of the main switch CF-SW1 of the front operation panel CF to this, and it is in the loading operation selection state or the discharge operation selection state from the output signal. Can be determined. Based on the determination result, the second control unit UK2 makes the switching operation signal from the power source selection switch M-SW1 valid while the loading operation is selected, but the switching operation signal from the power source selection switch M-SW2 is On the other hand, while the discharge operation is selected, the switching operation signal from the power source selection switch M-SW2 is validated, but the switching operation signal from the power source selection switch M-SW1 is invalidated. Instead of such a control mode, the first and second power source selection switches M-SW1, 2 may be configured to be switched independently of each other.

  Further, a motor drive permission signal can be output from the vehicle side control device UV to the second control device UK2 side. However, the motor drive permission signal indicates that the electric system is normal and the battery B is out of battery (that is, the remaining amount is less than a predetermined lower limit), and the electric system is normal but the battery B The output mode (for example, duty ratio of the output signal) is set to be different from the case where the remaining amount of battery is reduced to a certain extent (that is, below a predetermined value higher than the predetermined lower limit value), and the electric system fails Alternatively, when the battery B has run out, the motor drive permission signal is not output. The motor drive permission signal may be output only while the vehicle-side control device UV is receiving the work implement operating signal.

  Although not shown, a failure diagnosis circuit for detecting the presence or absence of a failure in the electric system is provided between the battery B and the electric motor M. The failure diagnosis circuit and the battery sensor provided in the battery B are provided. Are input to the vehicle-side control device UV, so that the vehicle-side control device UV determines which output mode of the motor drive permission signal should be output or whether the output should be stopped. The

  Further, an engine operating signal for identifying whether the engine E is operating or stopped can be input from a sensor provided in the engine E to the second control unit UK2 of the body control unit UK. A battery remaining amount signal indicating the remaining amount of the battery B can be input from a sensor provided in the battery B, and is output when the engine E is started by an operation input to the starter switch S-SW. An engine start signal can be input from a sensor provided in the starter switch S-SW.

  Then, the second control unit UK2 has front and rear operation panels based on the motor drive permission signal from the vehicle side control unit UV and the motor selection signal from the power source selection switches M-SW1 and M2 input thereto. The first and fifth notification lamps L1 to L5 of CF and CR can be controlled (lighted), and the battery B is out of battery when the hydraulic pump P is driven (that is, the remaining amount falls below a predetermined lower limit value). Or an emergency stop signal is output to the first control unit UK1 when it is determined that an abnormality has occurred in the electrical system. In this case, when the first control unit UK1 receives the emergency stop signal from the second control unit UK2, the multi-valve MV (each valve v1) controls the operation of the multi-valve MV to the neutral position so that the work implement is emergency-stopped. ~ V6) to output a stop command signal.

  The work implement emergency stop method based on the operation control of the multi-valve MV by the first control device UK1 described above is performed by the first control device UK1 when the emergency stop switch CR-SW5 is turned on during operation of the work implement. This is the same as the method of urgently stopping the work machines simultaneously by controlling the operation of the valve MV to the neutral position. In particular, in the present embodiment, the wiring for outputting the emergency stop signal from the second control unit UK2 is connected to the wiring of the emergency stop switch CR-SW5. Therefore, for the emergency stop signal input from the second control unit UK2 The emergency stop signal can be sent from the second control unit UK2 to the first control unit UK1 without specially providing the input terminal of the first control unit UK1. Note that the wiring for outputting the emergency stop signal from the second control unit UK2 can be directly connected to the first control unit UK1 without being connected to the wiring of the emergency stop switch CR-SW5.

  Thus, in the bodywork side control device UK of the present embodiment, the motor drive state and the engine drive state of the hydraulic pump P according to the operation input to the first and second power source selection switches M-SW1,2. When the switching control is performed, the signal input / output unit on the body side control device UK side of all signals to be exchanged between the body side control device UK and the vehicle side control device UV is the second control device. Only provided in UK2.

  Accordingly, in the bodywork side control unit UK, the interface function parts that should exchange information (signals) between this and the vehicle side control unit UV can be aggregated in the second control unit UK2, so A conventionally known work machine control device (that corresponds to the first control device UK1) that controls the work machine based on operation inputs to various work switch groups CF-SW1 to 3 and CR-SW1 to 5 on the operation panels CR and CF. The newly developed second control unit UK2 is simply added to and connected to the newly developed second control unit UK corresponding to the hybrid work vehicle. It becomes possible. As a result, the development cost can be reduced and the development period can be shortened. Also, a component (that is, a first work) is required between a normal type work vehicle that drives a hydraulic pump for a work machine only by an engine and a hybrid type work vehicle. The control device corresponding to one control device UK1 is shared.

  Further, as described above, the second control unit UK2 of the present embodiment is operated when the battery B runs out of the battery B or the electric system fails in the motor drive state of the hydraulic pump P, or the engine E is started. In this case, the signal output from the vehicle control device UV is converted into a conventionally known emergency stop signal so that the first control device UK1 controls the operation of the multi-valve MV so as to emergency stop the work implement. 1 Outputs to the control unit UK1. Therefore, in the bodywork side control unit UK, the conventionally known first control unit UK1 for controlling the work implement is used as it is, but an emergency stop signal is output from the second control unit UK2 having the interface function thereto. As a result, the work machine can be stopped urgently, and the overall control configuration can be simplified as much as possible.

  The second control unit UK2 is connected to the electromagnetic actuator A for driving the swash plate of the hydraulic pump P, and can output a swash plate angle change signal to the actuator A. Then, based on the swash plate angle change signal, the electromagnetic actuator A changes the swash plate angle to drive the stroke of each plunger of the hydraulic pump P, and thus the discharge capacity, whether the hydraulic pump P is in the engine drive state or the motor drive. Change control can be performed depending on whether the state is present.

  For example, in the illustrated example, the second control unit UK2 outputs a swash plate angle change signal to the swash plate driving actuator A only in the motor driving state, whereby the discharge capacity of the hydraulic pump P in the motor driving state is output. (For example, 80 cc / rev) is set to be larger than the discharge capacity (for example, 63 cc / rev) in the engine driving state. As a result, even when the electric motor M is rotated at a low speed for noise countermeasures or the like in the motor driving state, it is possible to secure a discharge oil amount necessary for driving the work machine by setting the hydraulic pump P to a relatively high discharge capacity. It becomes. Further, in the engine driving state, even if the engine E is rotated to a certain degree of high speed to prevent engine stall etc., it is effective to set the hydraulic pump P to a relatively low discharge capacity, so that the amount of discharged oil becomes excessive. It becomes possible to prevent. Instead of the discharge capacity control as described above, the discharge capacity of the hydraulic pump P may be set to be kept constant regardless of the switching of the power source.

Next, the operation of the embodiment will be described.
[Loading process]
The loading process of the charged dust in the dust charging box 3 by the dust loading device 2 includes the dust charging box 3 at the loading position (solid line in FIG. 1) and the discharge plate 6 near the rear end of the dust storage box 1. The process is started in a state where each is held at a predetermined retracted position. In this case, after the main switch CF-SW1 of the front operation panel CF is operated to the loading position, the loading process is started by turning on the loading switch CR-SW1 of the rear operation panel CR. The loading cycle is operated only once or continuously according to the operation position of the single unit changeover switch CR-SW2. During continuous operation, if the single unit changeover switch CR-SW2 is switched to the single operation position, the dust loading device 2 stops at the end of the loading cycle.

The dust pushed into the dust storage box 1 by the execution of the loading process is stored in the dust storage box 1 while being appropriately compressed between the discharge plate 6 and the dust loading device 2. In this case, in the illustrated example, the discharge cylinder A4 is gradually contracted by the compression reaction force that the discharge plate 6 receives from the stored dust, and the discharge plate 6 is gradually advanced.
[Discharge process]
When the garbage container 1 is filled with the contained dust, the garbage truck V is moved to the garbage disposal site. In the garbage disposal site, the main switch CF-SW1 of the front operation panel CF is operated to the discharge selection position, and if the vertical selection switch CF-SW2 is operated to the raised position, the dust input box 3 is rotated upward, Thereafter, when the advance / retreat selection switch CF-SW3 is operated to the discharge position, the discharge plate 6 can be moved backward to discharge the stored dust in the dust storage box 1. After the discharge process is completed, the up / down selection switch CF-SW2 is lowered to rotate the dust input box 3 back to the loading position, and the advance / retreat selection switch CF-SW3 is operated to advance. In a state where 6 is returned to the predetermined retracted position at the rear part of the dust storage box 1, the discharge plate 6 is made to stand still and stand by. Then, the garbage collection vehicle V is made to travel to the dust collection place, and the next loading process by the dust loading device 2 is started from the standby state.

  Thus, in the loading / discharging process, the first control unit UK1 of the body-side control unit UK mainly operates the work switch groups CF-SW1 to 3, CR-SW1 to the front and rear operation panels CF and CR. This can be executed by outputting a valve control signal to the multi-valve MV in response to an operation input to 3 and controlling the operation of each cylinder A1 to A4 of the work machine (especially the dust loading device 2 and the dust discharge device 7). The control procedure is well known in the art and will not be described.

Next, FIG. 9 and FIG. 9 show examples of control procedures when the body control unit UK and the vehicle control unit UV cooperate with each other to switch the power source of the hydraulic pump P between the engine E and the electric motor M. This will be described with reference to FIG. These controls are performed in a state where the vehicle key switch UV and the body control device UK (first and second control devices UK1, 2) are energized with the vehicle key switch turned on. Executed.
[Basic flow of power source switching control]
First, in FIG. 9, it is determined whether or not the power take-off switch P-SW has been turned on (step S1). It is determined whether the mode or the arbitrary switching mode (that is, the manual mode).

  If it is determined in step S3 that the mode is the arbitrary switching mode, the process proceeds to step S3, where it is determined whether any of the power source selection switches M-SW1, 2 is turned on (ie, motor drive selection). That is, in the case of engine drive selection), the routine proceeds to step S4, where it is determined whether or not the engine is operating. If NO is determined in step S4, the process proceeds to step S5, where an engine start command signal is output from the second control unit UK2 to the vehicle side control unit UV, whereby the engine E is started and the hydraulic pump While P is driven, the electromagnetic clutch 11 is in a connected state, and then the process proceeds to step S6.

  On the other hand, if it is not NO in step S4 (that is, the engine is operating), step S5 is skipped and the process proceeds to step S6. At this time, the hydraulic pump P is driven by the engine E. However, since the valves v1 to v6 of the multi-valve MV are in the neutral position, the oil discharged from the hydraulic pump P passes through the relief valve R and is on the oil tank T side. The cylinders A1 to A6 of the work machine are put in a standby state without being operated.

  In step S6, the work switches CF-SW1 to 3 and CR-SW1 to 4 of the work machine are operated and input to perform an arbitrary work (for example, loading process or discharging process) (for example, the main switch CF-SW1 is switched). It is determined whether or not the loading switch CR-SW1 has been turned on). If it is determined that there has been an operation input, the process proceeds to step S7, and the multi-valve MV is controlled according to the operation input. The valves v1 to v6 are switched and controlled to operate the cylinders A1 to A6 of the work machine to execute work of the work machine (for example, loading work), and then the process proceeds to step S8. On the other hand, if it is determined NO in step S6, a return is returned.

  In the step S8, when the condition for ending the work being executed is satisfied, for example, an operation input to the work switch for ending the work (for example, switching operation of the main switch CF-SW1 to the off position, loading) It is determined whether or not there is a continuous operation of the single switch CR-SW2 during the continuous operation of the process, or when the single operation of the loading process is completed. If it is determined, the process returns and the work being executed continues. On the other hand, if it is determined in step S8 that the answer is no, the process proceeds to step S9 to terminate the work being executed, and then returns.

  If it is determined in step S2 that the operation position of the mode changeover switch SWC is in the automatic changeover mode, the process proceeds to step S10, and the work switches CF-SW1 to SW1 of the work implement are moved as in step S6. 3, CR-SW1 to 4 are operated and input to execute an arbitrary operation (for example, loading process or discharging process) (for example, main switch CF-SW1 is loaded and loading switch CR-SW1 is operated). If not, the process returns. If not, the process proceeds to step S11 and depends on the operation input mode of the work switches CF-SW1 to 3 and CR-SW1 to 4. The automatic power source selection process is executed. The automatic selection process in step S11 will be specifically described in the subroutine shown in FIG.

  When the automatic power source selection process ends in step S11, the process proceeds to step S12, and it is determined whether the power source selected in step S11 is the engine E or the electric motor M. If it is determined in step S12 that the engine E is selected as the power source, the process proceeds to step S4. If it is determined that the electric motor M is selected, the process proceeds to step S13.

  In step S13, it is determined whether or not the battery B is out of battery (that is, the remaining amount is lower than a predetermined lower limit value) and the electric system is normal and the motor can be driven. If it is determined there to be no (that is, the motor cannot be driven), the process proceeds to step S4.

  If it is determined in step S13 that the answer is no (that is, the motor can be driven), the process proceeds to step S14, where a motor drive command signal is output from the second control unit UK2 to the vehicle control unit UV. The motor M is started to drive the hydraulic pump P, and the electromagnetic clutch 11 is disconnected. At this time, the hydraulic pump P is driven by the electric motor M. However, since the valves v1 to v6 of the multi-valve MV are in the neutral position, the oil discharged from the hydraulic pump P passes through the relief valve R and the oil tank T. The cylinders A1 to A6 of the work machine are placed in a standby state without being operated.

Next, the process proceeds to step S15, and in the same manner as in step S6, the work switches CF-SW1 to 3 and CR-SW1 to 4 of the work machine perform an operation input to execute an arbitrary work (for example, loading process or discharging process) (For example, the main switch CF-SW1 is loaded and the loading switch CR-SW1 is turned on) is determined. When it is determined in step S15 that the operation input has been made, the process proceeds to step S16, and the valves v1 to v6 of the multi-valve MV are switched and controlled in accordance with the operation input, so that the cylinders A1 to A1 of the work implement are switched. A6 is operated to execute the work of the work machine (for example, loading work), and then the process proceeds to step S8. On the other hand, if NO is determined in step S15, a return is returned.
[Power source selection process flow]
FIG. 10 is a subroutine specifically showing the process of step S11 (FIG. 9). In FIG. 10, first, in step S101, operation input information of the work switches CF-SW1 to 3 and CR-SW1 to 4 which are input in step S10 is acquired.

  Next, the process proceeds to step S102, and the power corresponding to the operation input mode of the work switches CF-SW1 to 3 and CR-SW1 to 4 is determined from a plurality of power source selection information stored in advance in the storage unit C1 of the second control unit UK2. Source selection information is extracted and input to the power source selection unit C2 of the second control unit UK2, and the extracted power source selection information ignores the operation position of the power source selection switches M-SW1 and M2. This is related to the first power source selection information for selecting a specific power source corresponding to the operation input mode of the work switch, or the operation input of the work switch by operating the power source selection switch M-SW1, 2. Whether the information relates to the second power source selection information (selection priority) for prompting selection of a specific power source corresponding to the aspect is also read.

  Next, the process proceeds to step S103, and it is determined whether or not the power source selection information extracted in step S102 is selection information (selective electric power priority) that particularly urges electric power among the second power source selection information. If NO is determined, the process proceeds to step S104, and the power source selection information extracted in step S102 is the selection information for selecting the engine to be driven (selected engine priority) among the second power source selection information. It is determined whether or not.

  If NO in step S104, the process proceeds to step S105, where a power source is selected based on the first power source selection information, that is, the operation position of the power source selection switches M-SW1 and M2. Rather, a specific power source corresponding to the operation input mode of the work switch is selected.

  On the other hand, if it is determined in step S103 that it is not negative (that is, selective electric power is given priority), the process proceeds to step S106, and as in step S3, one of the power source selection switches M-SW1, 2 is turned on. If it is determined whether (ie, motor drive is selected) or not (ie, if motor drive is selected), the process proceeds to step S107, the power source is selected based on the operation position of the power source selection switches M-SW1 and M2, and the end. It becomes. Therefore, in this case, motor driving is selected.

  If NO (ie, engine drive selection) is determined in step S106, the process proceeds to step S108 where the warning means L6 is activated to alert the operator to the motors of the power source selection switches M-SW1 and M2. The operation to switch to the selection side is urged, and then the process proceeds to step S109 to count the warning time, and when the warning time passes a predetermined time (for example, 5 seconds), the process proceeds to step S107 and the power source selection switch M-SW1, 2 The power source is selected based on the operation position. Therefore, when the operator does not turn on the power source selection switches M-SW1 and M2 within a predetermined time (motor drive selection), engine drive is selected against the second power source selection information.

  On the other hand, if it is determined in step S104 that the answer is no (that is, the selected engine has priority), the process proceeds to step S110, and as in step S106, one of the power source selection switches M-SW1 and M2 is turned on. If it is determined whether (i.e., motor drive selection) has been made or not (i.e., if motor drive selection has been made), the process proceeds to step S108. In step S108, the warning means L6 is activated to prompt the operator to switch the power source selection switches M-SW1 and M2 to the engine selection side. Then, the process proceeds to step S109 and the warning time is counted. When the warning time has passed the predetermined time, the process proceeds to step S107, and the power source is selected based on the operation position of the power source selection switches M-SW1 and M2. Therefore, when the operator does not turn off the power source selection switches M-SW1 and M2 within a predetermined time (engine drive selection), the motor drive is selected against the second power source selection information.

  If it is determined in step S110 that the result is NO (ie, engine drive selection), the process proceeds to step S107, and a power source is selected based on the operation position of the power source selection switches M-SW1 and M2. Therefore, in this case, engine driving is selected.

Thus, when the second power source selection information is input to the power source selection unit C2 of the second control unit UK2, the specific power source corresponding to the operation input mode of the work switch is the power source selection switch. Based on the operation position of the power source selection switches M-SW1 and 2 after the warning means L6 is activated for a predetermined time immediately when the selection is made with the M-SWs 1 and 2 and when it is not selected. The power source can be selected. Accordingly, the power source selection information input to the power source selection unit C2 is the second power source selection information, and a specific power source corresponding to the operation input of the work switch is selected by the power source selection switches M-SW1 and M2. If not, the operator is prompted to switch the power source selection switches M-SW1 and M2 by the warning to the worker, so that a power source more suitable for the work operation mode can be selected. Even when the power source is not switched in spite of the warning to the operator, the power source is selected based on the actual operation position of the power source selection switches M-SW1 and M2. Thus, the intention of the worker can be more respected.

According to the power source switching control mode according to the present embodiment described above (FIGS. 9 and 10), in the hybrid work vehicle V, when the mode change switch SWC is set to the arbitrary switching mode, the hydraulic operation is performed. The hydraulic pump P that supplies hydraulic oil to the working machine of the type can be selectively driven by any power of the engine E and the electric motor M based on the switching operation of the power selector switches M-SW1 and M2. It is convenient that the power source can be properly used according to the work situation and environment. For example, it is convenient that the hydraulic pump P can be driven by the electric motor M in a place such as a residential area where noise exhaust of the engine E is a problem, and the engine E can be driven in a place where the problem is not a problem.

  Further, in particular, the bodywork side control unit UK (second control unit UK2) previously corresponds to a plurality of operation modes, that is, a plurality of operation input modes to the operation switches CF-SW1 to 3 and CR-SW1 to 4, respectively. A storage unit C1 for storing the set power source selection information, a power source selection unit C2 for selecting a power source based on the power source selection information stored in the storage unit C1 and an operation input to the work switch, and its power Since it includes a switching control unit C3 that switches and controls the power source switching device X to operate the work machine with the power source selected by the source selection unit C2, it is preset in accordance with the operation input mode to the work switch. Based on the power source selection information, it is possible to automatically and accurately select the power source according to the actual operation input status to the work switch, and the work machine can be operated, thereby simplifying the switch operation as a whole. It has been able to increase the working efficiency, and also becomes possible to effectively avoid in advance a situation that would operate the working machine with improperly selected power source.

  In addition, an automatic switching mode for automatically switching the power source of the work machine and an arbitrary switching mode for arbitrarily switching the power source of the work machine based on an operation input to the power source selection switches M-SW 1 and 2 are selected at any time. Since the mode change switch SWC for operation is provided, when the automatic switching mode is selected, the power source selection control according to the operation input mode to the work switch can be automatically performed as described above. On the other hand, when the arbitrary switching mode is selected, the power source can be arbitrarily selected based on the operation input to the power source selection switches M-SW1 and M2, and both modes can be used properly according to the work environment. is there.

  Furthermore, since the operation terminal MS as an arbitrary setting means for arbitrarily setting (changing) the power source selection information and storing it in the storage unit C1 can be connected to the second control unit UK2, the power source selection information is not fixed. It can be arbitrarily changed at any time, which is more convenient.

  Further, the second control unit UK2 of the present embodiment determines that the battery B has run out of battery or an abnormality has occurred in the electrical system in the motor drive state of the hydraulic pump P shown in FIG. When the motor drive permission signal is no longer output from the vehicle-side control device UV even though the work implement operating signal is input, an emergency stop signal is output to the first control device UK1 side. In response to this, the first control unit UK1 issues a stop command signal to the multi-valve MV and controls the operation to the neutral position all at once, thereby urgently stopping the working machine in operation.

  As described above, when the battery B runs out of the battery while the hydraulic pump P is in a motor drive state or when an abnormality occurs in the electric system, the work machine is stopped urgently, so that the electric motor M cannot be driven normally. Therefore, it is possible to prevent the work machine from operating unexpectedly and surely.

  In the present embodiment, the dust discharge device 7 operates as long as the up / down selection switch CF-SW2 or the advance / retreat selection switch CF-SW3 is operated. For example, the dust discharge box 3 is moved from the loading position (lowering position). When the worker interrupts the operation of the up / down selection switch CF-SW2 while being rotated upward toward the discharge position (raised position), the dust box 3 is stopped at a position below the discharge position. In this case, although the operation of the work machine (the dust discharge device 7) is temporarily stopped, the power source switching control of the hydraulic pump P based on the switching operation input of the power source selection switches M-SW1 and M2 is performed. May be executable.

  Further, even when the emergency stop switch CR-SW5 is operated and the work machine is urgently stopped, the operation is temporarily stopped. Therefore, the power source of the hydraulic pump P based on the switching operation input of the power source selection switches M-SW1 and M2. Switching control can be executed. When safety cannot be sufficiently ensured during an emergency stop or when safety is a top priority, the power of the hydraulic pump P based on the switching operation input of the power source selection switches M-SW1 and M2 after the emergency stop is provided. It may be set to prohibit the source switching control.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to these embodiment, Various embodiment is possible within the scope of the present invention.

  For example, in the above-described embodiment, a so-called compression plate type garbage collection vehicle is illustrated as a work vehicle. However, in the present invention, a dust collection vehicle equipped with a so-called rotation plate type dust collection device by cooperation of a rotation plate and a push plate. Alternatively, a dust collection vehicle equipped with a so-called dump-type dust discharge device that tilts the dust storage box 1 may be used. In the present invention, the work vehicle is not limited to a garbage truck, and other various work vehicles that drive the work machine with a hydraulic pump, such as a concrete mixer truck, a concrete pump truck, a container transporter with a container loading / unloading function, The present invention can be applied to work vehicles such as an automobile wholesale transport vehicle with an automobile loading / unloading function.

  In the above embodiment, the engine or the electric motor is selectively switched as an indirect power source of the work machine (that is, as a power source of a hydraulic pump that drives the work machine). The engine or the electric motor may be selectively switched as a direct power source of the work machine.

  Moreover, in the said embodiment, although what was implemented in the hybrid vehicle which enabled the motive power of the electric motor M not only to drive a hydraulic pump but to drive a wheel was shown, in this invention, the motive power of the electric motor is shown. You may make it use only for the drive of a hydraulic pump. In this case, an electric motor dedicated to driving the pump, a battery that supplies electric power to the electric motor, an engine that is configured separately and independently from a traveling engine that applies driving force to the wheels, and is used only for driving a hydraulic pump, An embodiment in which a power switching device capable of selectively switching the power source of the hydraulic pump to either an engine or an electric motor is mounted on the bodywork K can also be adopted. In this embodiment, in the embodiment, The functions of the engine / motor control unit of the vehicle-side control device UV may be configured such that the body-side control device UK, particularly the second control device UK2, is responsible for the control of the engine / motor on the body UK side.

  In the embodiment, each power source selection switch M-SW1, 2 has a motor drive selection position (on operation position in the embodiment) and an engine drive selection position (off operation position in the embodiment). In the present invention, both the selection positions can be alternately selected by one switch. However, in the present invention, any power source selection switch M-SW1, 2 can be switched before the operation. The driving state (for example, engine driving state) of the hydraulic pump may be switched to another driving state (for example, motor driving state). In addition, only the power source selection switch that performed the power source selection operation of the hydraulic pump (for example, the ON operation for selecting the motor drive) last time among the plurality of power source selection switches M-SW1, 2 is the next power source. You may comprise so that switching operation (for example, OFF operation for selecting engine drive) can be performed.

  In the above embodiment, the motor drive state is selected by turning on the power source selection switches M-SW1 and M2, and the engine drive state is selected by turning off the power source selection switch M-SW1, but the power source selection switch M-SW1 is selected. , 2 may be output so that the two power sources (motors and engines) can be distinguished and selected. For example, the engine drive is selected by the on operation and the motor drive is selected by the off operation. You may comprise.

  In the above embodiment, the power source selection switches M-SW1 and M2 are dedicated to switching the power source of the hydraulic pump. However, in the present invention, the existing work switch is also used as the power source selection switch. Also good. For example, when the main switch CF-SW1 is also used as a power source selection switch, the main switch CF-SW1 is automatically returned from the loading position or the discharge position to the off position side. After selecting the position or the discharge position, the power source is switched when the same operation position is operated again, the power source is further switched when the same operation position is operated again, and the power source is further switched when the same operation position is operated again. You may enable it to perform alternate switching operation in the procedure of switching.

C1 ··· Storage unit C2 ··· Power source selection unit C3 · · · Switching control unit CF-SW1 · · Main switch (work switch)
CF-SW2 ・ ・ Up / down selection switch (work switch)
CF-SW3..Advance / retreat selection switch (work switch)
CR-SW1 ・ ・ Load switch (work switch)
CR-SW2 ··· Single switch (work switch)
CR-SW3, reverse switch (work switch)
CR-SW4 ・ ・ Opening / closing switch for opening door (work switch)
E ... Engine F ... Car body K ... Bodywork L6 ... Sixth notification lamp (warning means)
M ... Electric motor MS ... Operation terminal (arbitrary setting means)
M-SW1... First power source selection switch (power source selection switch)
M-SW2 ... second power source selection switch (power source selection switch)
MV ... multi-valve (valve device)
P ... Hydraulic pump SWC Mode change switch UK ... Bodywork side control device
UK2 ... The second controller V of the bodywork side control device ... Garbage truck (work vehicle)
X ... Power source switching device 2 .... Dust loading device (work machine)
7 .... Dust discharge device (work machine)
50 ・ ・ ・ ・ ・ ・ Container reversing drive device (work machine)

Claims (4)

A bodywork mounted on the vehicle body (F) of the work vehicle (V),
A working machine (2, 7, 50) that can operate using either the engine (E) or the electric motor (M) as a power source, and one of a plurality of working modes by the working machine (2, 7, 50). Work modes (CR-SW1 to 4, CF-SW1 to 3) for arbitrarily selecting and operating, and work modes corresponding to operation input modes to the work switches (CR-SW1 to 4, CF-SW1 to 3) And a control device (UK) for controlling the operation of the work machines (2, 7, 50).
The control device (UK) stores a power source selection information set in advance corresponding to a plurality of operation input modes to the work switches (CR-SW1 to 4, CF-SW1 to 3) ( C1), the power source selection information that selects the power source based on the power source selection information stored in the storage unit (C1) and the operation input mode to the work switches (CR-SW1-4, CF-SW1-3). Of the working machine (2, 7, 50) so that the power source selected by the part (C2) and the power source selecting part (C2) is a power source of the working machine (2, 7, 50). A switching control unit (C3) for switching and controlling a power source switching device (X) capable of selectively switching the power source to either the engine (E) or the electric motor (M). Vehicle bodywork.   The control device (UK) includes a power source selection switch (M) for arbitrarily switching the power source of the work implement (2, 7, 50) to either the engine (E) or the electric motor (M). -SW1, 2), the storage unit (C1), the power source selection unit (C2), and the switching control unit (C3) are operated effectively so that the power source of the work implement (2, 7, 50) is An automatic switching mode for automatically switching, and an arbitrary switching mode for arbitrarily switching the power source of the work implement (2, 7, 50) based on an operation input to the power source selection switch (M-SW1, 2) as needed. The work vehicle bodywork according to claim 1, wherein a mode change switch (SWC) for performing a selection operation is connected.   The work vehicle bodywork according to claim 1 or 2, further comprising an arbitrary setting means (MS) for arbitrarily setting the power source selection information and storing the power source selection information in the storage unit (C1). The control device (UK) includes a power source selection switch (M) for arbitrarily switching the power source of the work implement (2, 7, 50) to either the engine (E) or the electric motor (M). -SW1, 2) and a warning means (L6) for urging the operator to switch the power source selection switch (M-SW1,2),
The power source selection information stored in the storage unit (C1) includes the work switches (CR-SW1 to 4, CF-SW1 to 3) ignoring the operation position of the power source selection switches (M-SW1, 2). ) To select a specific power source corresponding to the operation input mode to the power source selection unit (C2) and the operation of the power source selection switch (M-SW1, 2). Second power source selection information that prompts the user to select a specific power source corresponding to the operation input mode to the work switches (CR-SW1 to 4, CF-SW1 to 3),
When the second power source selection information is input to the power source selection unit (C2), the control device (UK) operates the work switches (CR-SW1 to 4, CF-SW1 to 3). If a specific power source corresponding to the input mode is selected by the power source selection switch (M-SW1, 2), the warning means (L6) is turned on for a predetermined time immediately when not selected. The power source selection unit (C2) is made to select a power source based on an operation position of each of the power source selection switches (M-SW1, 2) after being operated, respectively. The work vehicle body article according to any one of the preceding claims.

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